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Electrogalvanized hinge bolts
Swivel Bolt Series
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Swivel Bolt Series
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Colored zinc-plated expansion hook
Rainbow chromate passivation (c2C) is performed on the basis of electrogalvanizing to form a colored passivation film with a thickness of about 8-15μm. The salt spray test can last for more than 72 hours without white rust.
Electroplated zinc flange bolts
The head of the flange bolt has a round flange to increase the contact area and disperse the pressure (standard GB/T 5787, GB/T 5789). Common specifications M6-M30, material Q235 or 35CrMo, surface galvanized or blackened.
Colored zinc-plated gaskets
Colored zinc-plated gaskets are passivated on the basis of electrogalvanizing to form a rainbow-colored passivation film (containing trivalent chromium or hexavalent chromium) with a film thickness of about 0.5-1μm. Its anti-corrosion performance is significantly better than ordinary electrogalvanizing, and the surface color is bright, with both functionality and decorativeness.
Electrogalvanized expansion bolts
It consists of countersunk bolts, expansion tubes, flat washers, spring washers and hexagonal nuts. The material is mostly carbon steel (such as Q235), and the thickness of the electrogalvanized layer is 5-12μm, which meets ISO 1461 or GB/T 13912-2002 standards.
Electrogalvanized pins
GB/T 882-2008 “Pin” standard, nominal diameter 3-100mm, materials include carbon steel, stainless steel, etc., electrogalvanized layer thickness 5-12μm, in line with c1B or c1A post-treatment requirements.
Black zinc plated hexagonal bolts
Hexagonal bolts are the most common standard bolts with hexagonal heads and are used with nuts (standard GB/T 5780). Common materials are Q235 or 35CrMo, with galvanized or blackened surfaces.
Black zinc plated countersunk cross bolts
The head of the countersunk cross bolt is conical and can be completely embedded in the surface of the connected parts to maintain a smooth appearance (standard GB/T 68). Common materials are carbon steel, stainless steel or engineering plastics (such as nylon 66), with galvanized or natural color treatment on the surface.
Electrogalvanized hexagonal bolts
Hexagonal bolts are the most common standard bolts with hexagonal heads and are used with nuts (standard GB/T 5780). Common materials are Q235 or 35CrMo, with galvanized or blackened surfaces.
Electrogalvanized nuts
Electrogalvanized nuts are the most common standard nuts. A zinc layer is deposited on the surface of carbon steel through an electrolytic process. The surface is silvery white or bluish white, and has both anti-corrosion and decorative functions. Its structure includes a hexagonal head, a threaded section, and a galvanized layer, which complies with GB/T 6170 and other standards.
Umbrella handle anchor (J-type anchor bolt/umbrella handle embedded bolt)
The umbrella handle anchor is named because the end of the bolt is a J-shaped hook (similar to the umbrella handle). It consists of a threaded rod and a J-shaped hook. The hook part is completely embedded in the concrete to provide pull-out resistance.
Hexagon socket hot-dip galvanized bolts
The hexagon socket bolt head has a hexagon socket hole and needs to be tightened with a hexagon socket wrench (standard GB/T 70.1). Common materials are 35CrMo or 42CrMo, and the surface treatment is divided into three types: electrogalvanized, color zinc-plated, and black zinc-plated.
Hexagon socket electrogalvanized bolts
The hexagon socket bolt head has a hexagon socket hole and needs to be tightened with a hexagon socket wrench (standard GB/T 70.1). Common materials are 35CrMo or 42CrMo, and the surface treatment is divided into three types: electrogalvanized, color zinc-plated, and black zinc-plated.
Hot-dip galvanized chemical bolts
Chemical bolts fix the screw in a substrate such as concrete through a chemical anchoring agent, and are composed of a screw, a hose, and a washer (standard GB 50367). Common materials are galvanized steel or stainless steel, and the anchoring depth is ≥8d (d is the bolt diameter).
Electrogalvanized cross countersunk drill thread
The head is a cross-groove countersunk design, which can be hidden in the installation surface to keep the surface flat. The drill bit diameter matches the thread diameter (such as ST4.2 drill bit diameter 4.2mm), which complies with GB/T 15856.1-2002 standard.
Colored zinc-plated expansion bolts
The color zinc passivation process (c2C) is adopted, the coating thickness is 8-15μm, and the corrosion resistance of the salt spray test is more than 72 hours, which has both anti-corrosion and decorative functions.
Electroplated galvanized gaskets
Electroplated galvanized gaskets are gaskets that deposit a zinc layer on the surface of carbon steel or alloy steel through an electrolytic process. The thickness of the zinc layer is usually 5-15μm. Its surface is silvery white or bluish white, and it has both anti-corrosion and decorative functions. It is one of the most commonly used surface treatment methods in the industrial field.
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